can prop
Verbo regular: prop - propped- propped

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I can prop
you can prop
he can prop
we can prop
you can prop
they can prop 	I can be propping
you can be propping
he can be propping
we can be propping
you can be propping
they can be propping	I can have propped
you can have propped
he can have propped
we can have propped
you can have propped
they can have propped	I can have been propping
you can have been propping
he can have been propping
we can have been propping
you can have been propping
they can have been propping	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I cannot prop
you cannot prop
he cannot prop
we cannot prop
you cannot prop
they cannot prop 	I cannot be propping
you cannot be propping
he cannot be propping
we cannot be propping
you cannot be propping
they cannot be propping	I cannot have propped
you cannot have propped
he cannot have propped
we cannot have propped
you cannot have propped
they cannot have propped	I cannot have been propping
you cannot have been propping
he cannot have been propping
we cannot have been propping
you cannot have been propping
they cannot have been propping	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
can I prop?
can you prop?
can he prop?
can we prop?
can you prop?
can they prop? 	can I be propping?
can you be propping?
can he be propping?
can we be propping?
can you be propping?
can they be propping? 	can I have propped?
can you have propped?
can he have propped?
can we have propped?
can you have propped?
can they have propped? 	can I have been propping?
can you have been propping?
can he have been propping?
can we have been propping?
can you have been propping?
can they have been propping? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
can I not prop?
can you not prop?
can he not prop?
can we not prop?
can you not prop?
can they not prop? 	can I not be propping?
can you not be propping?
can he not be propping?
can we not be propping?
can you not be propping?
can they not be propping? 	can I not have propped?
can you not have propped?
can he not have propped?
can we not have propped?
can you not have propped?
can they not have propped? 	can I not have been propping?
can you not have been propping?
can he not have been propping?
can we not have been propping?
can you not have been propping?
can they not have been propping?